/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.netbeans.modules.xml.text.completion;

import javax.swing.text.Document;
//import org.netbeans.modules.xml.core.actions.XMLUpdateDocumentAction;
import org.openide.cookies.EditorCookie;
import org.openide.nodes.Node;

/**
 * Reset internal state after user have changed external one (entities).
 * It resets grammar cache. It is registered at module layer and utilized
 * by {@link XMLUpdateDocumentAction}.
 *
 * @author  Petr Kuzel
 */
public final class ReloadActionPerformer { //implements XMLUpdateDocumentAction.Performer {

    public void perform(Node node) {
        if (node == null) return;
        EditorCookie editor = (EditorCookie) node.getCookie(EditorCookie.class);
        if (editor == null) return;
        Document doc = editor.getDocument();
        if (doc == null) return;
        GrammarManager cache = (GrammarManager)
            doc.getProperty(XMLCompletionQuery.DOCUMENT_GRAMMAR_BINDING_PROP);        
        if (cache == null) return;
        
        cache.invalidateGrammar();        
    }
}
